JerseyDefaultExceptionMapper.java

/**
 * 
 * @author loind
 *
 */
@Provider
public class JerseyDefaultExceptionMapper  implements ExceptionMapper<Throwable> {
	  
    private static final Logger logger = LoggerFactory.getLogger(DefaultExceptionMapper.class);

	public static final List<Class> ignoreExceptions = new ArrayList<>();

	static {
		ignoreExceptions.add(NotSupportedException.class);
	}

	public Response toResponse(Throwable ex) {
			ResponseData response = ResponseData.responseData(getHttpStatus(ex));
			if(logger.isWarnEnabled() && !ignoreExceptions.contains(ex.getClass())){

				StringWriter errorStackTrace = new StringWriter();
				ex.printStackTrace(new PrintWriter(errorStackTrace));
				logger.warn("Opos ! {}",errorStackTrace.toString());
			}
			return Response.ok()
					.entity(response).type(MediaType.APPLICATION_JSON_TYPE)
					.build();	
		}

	private int getHttpStatus(Throwable ex) {
			if(ex instanceof WebApplicationException ) { //NICE way to combine both of methods, say it in the blog 
				return ((WebApplicationException)ex).getResponse().getStatus();
			} else {
				return Response.Status.INTERNAL_SERVER_ERROR.getStatusCode(); //defaults to internal server error 500
			}
	}
}